CN208448702U - A kind of solid-phase extraction column - Google Patents
A kind of solid-phase extraction column Download PDFInfo
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- CN208448702U CN208448702U CN201820829144.1U CN201820829144U CN208448702U CN 208448702 U CN208448702 U CN 208448702U CN 201820829144 U CN201820829144 U CN 201820829144U CN 208448702 U CN208448702 U CN 208448702U
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- volume tube
- filtration members
- filter house
- solid
- phase extraction
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Abstract
The utility model discloses a kind of solid-phase extraction columns, including filter house and volume tube, the volume tube is at least provided with a feed inlet, the filter house includes screen pipe and discharge nozzle, the screen pipe upper end is connected to the volume tube and lower end is connected to the discharge nozzle, filtration members are installed, the filtration members include multilayer degreasing cotton layer and active carbon layer, and the active carbon layer and the degreasing cotton layer are staggered and the upper and lower ends of the filtration members are degreasing cotton layer in the filter house.The utility model passes through above-mentioned setting, filtration members are made of multilayer degreasing cotton layer and active carbon layer, with good filter effect, and the upper and lower ends of filtration members are degreasing cotton layer, the loss of active carbon layer can be reduced, while the bottom end of filter house is also equipped with discharge nozzle, to provide significantly supporting role to filtration members, the loss degree for reducing filtration members, prolongs the service life.
Description
Technical field
The utility model relates to solid phase extraction techniques, in particular to a kind of solid-phase extraction column.
Background technique
Solid-phase extraction column is a kind of sample pretreatment device for extracting, separating, be concentrated developed from chromatographic column.
Be mainly used in various food, agricultural and animal products, in environmental sample and biological sample target compound sample pre-treatments.Solid phase
Abstraction technique has been used extensively in many national standards and industry analysis standard.
Common solid-phase extraction column mostly using polyethylene as the syringe type device of material, the device be provided with two panels with
Polypropylene or glass fibre are the patch of material, are filled with a certain amount of adsorbent among two patches.Solid-phase extraction column upper end
It opens wide, lower end is liquid outlet, and liquid is discharged after adsorbent from outlet.As shown in Figure 1, including volume tube 1 and discharging
Pipe 2, generally by filtration members 5(adsorbent) it is installed at the bottom end outlet close to discharge nozzle and increases the volume of solid-phase extraction column,
But the percussion being similarly also easy in long term test due to testing liquid goes out adsorbent from liquid outlet, greatly
Influence whole service life, in view of this it is necessary to propose a kind of solid-phase extraction column.
Utility model content
The purpose of the utility model is to provide a kind of solid-phase extraction column, there is the impact work for slowing down testing liquid to adsorbent
With to extend whole service life.
The above-mentioned technical purpose of the utility model has the technical scheme that a kind of solid-phase extraction column,
Including filter house and volume tube, for the volume tube at least provided with a feed inlet, the filter house includes screen pipe and discharge nozzle,
The screen pipe upper end is connected to the volume tube and lower end is connected to the discharge nozzle, is equipped with filtration members in the filter house,
The filtration members include multilayer degreasing cotton layer and active carbon layer, and the active carbon layer is staggered and described with the degreasing cotton layer
The upper and lower ends of filtration members are degreasing cotton layer.
By using above-mentioned technical proposal, filtration members are made of multilayer degreasing cotton layer and active carbon layer, have good mistake
Effect is filtered, and the upper and lower ends of filtration members are degreasing cotton layer, can reduce the loss of active carbon layer, while the bottom end of filter house
It is also equipped with discharge nozzle, to provide significantly supporting role to filtration members, reduces the loss degree of filtration members, is extended
Service life.
The utility model is further arranged to: pass through screw thread releasable connection between the filter house and the volume tube,
The cross-sectional dimension of the volume tube is greater than the cross-sectional dimension of the screen pipe, and the cross-sectional area ruler of the screen pipe
The very little cross-sectional dimension greater than the discharge nozzle.
By using above-mentioned technical proposal, screw thread releasable connection is conducive to the operation when replacing filtration members, simpler
Effectively；And since the cross-sectional dimension of volume tube is greater than the cross-sectional dimension of the screen pipe, and the cross of the screen pipe
Cross-sectional dimension is greater than the cross-sectional dimension of the discharge nozzle, so the impact forces that filtration members are subject in screen pipe are big
Part can all be offset by discharge nozzle.
The utility model is further arranged to: the volume tube, filter house and discharge nozzle are on same axle center.
The utility model is further arranged to: the bottom outer surface of the volume tube offers multiple tracks thread groove, described
It is also fixedly connected with horizontally disposed connection ring in the bottom outer surface of volume tube, is also fixedly connected with a circle in the connection ring
The sealing ring being vertically arranged, the sealing ring, connection ring and volume tube enclose the connection cavity for being set as a bottom end opening.
The utility model is further arranged to: the top of the connection cavity is connected with a circle sealing ring, the sealing
Circle is soft rubber matter, and the top inner side wall of the screen pipe is equipped with the screw thread of multi-turn and thread groove cooperation.
By using above-mentioned technical proposal, when being connected through a screw thread between volume tube and screen pipe, due to setting for sealing ring
It sets, so as to form the good connection structure of leakproofness.
The utility model is further arranged to: compression ring, the compression ring and the mistake are additionally provided in the filter house
Clearance fit between filter portion side wall, the compression ring are connected on the degreasing cotton layer of the bottom of the filtration members.
By using above-mentioned technical proposal, it is provided with compression ring and enables the degreasing cotton layer holding as far as possible of the bottom flat
Whole state delays to the recess at discharging tube hub.
The utility model is further arranged to: connecting rope, the side wall of the volume tube are also connected on the compression ring
On offer multiple intercommunicating pores, the intercommunicating pore is located in the connection cavity and position is higher than the thread groove, the connection
One end of rope is pierced by the intercommunicating pore and is located in the connection cavity.
By using above-mentioned technical proposal, the connecting rope of setting is conducive to when replacing filtration members, can be pressed by being promoted
Tight ring carrys out integral replacing filtration members, more efficient to be also more convenient.
In conclusion the utility model has the following beneficial effects: filtration members are by multilayer degreasing cotton layer and active carbon layer group
At, there is good filter effect, and the upper and lower ends of filtration members are degreasing cotton layer, can reduce the loss of active carbon layer,
The bottom end of filter house is also equipped with discharge nozzle simultaneously, to provide significantly supporting role to filtration members, reduces filtering
The loss degree of part, prolongs the service life.
Detailed description of the invention
Fig. 1 is prior art plan view；
Fig. 2 is the floor map of the present embodiment；
Fig. 3 is the structural schematic diagram of volume tube bottom terminal ends.
In figure: 1, volume tube；2, filter house；3, screen pipe；4, discharge nozzle；5, filtration members；6, degreasing cotton layer；7, active carbon
Layer；8, thread groove；9, connection ring；10, sealing ring；11, cavity is connected；13, compression ring；14, connecting rope；15, intercommunicating pore.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing.
Specific embodiment is only the explanation to the utility model, is not limitations of the present invention, this field
Technical staff can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but only
It will be in the scope of the claims of the utility model all by the protection of Patent Law.
Embodiment: a kind of solid-phase extraction column, including filter house 2 and volume tube 1, the top of volume tube 1 are provided with a charging
Mouthful, an air inlet is offered on side wall, filter house 2 includes screen pipe 3 and discharge nozzle 4, and 3 upper end of screen pipe is connected to volume tube 1
And lower end is connected to discharge nozzle 4, and filtration members 5 are equipped in filter house 2, filtration members 5 include multilayer degreasing cotton layer 6 and active carbon layer
7, active carbon layer 7 is staggered with degreasing cotton layer 6 and the upper and lower ends of filtration members 5 are degreasing cotton layer 6.
Directly filtration members 5 are gone out when pouring into testing liquid in order to reduce, the cross-sectional dimension of volume tube 1 was greater than
The cross-sectional dimension of chimney filter 3, and the cross-sectional dimension of screen pipe 3 is greater than the cross-sectional dimension of discharge nozzle 4.To out
Expects pipe 4 is that filtration members 5 provide biggish buffer function, counteracts the impact forces of most of liquid, it is de- to avoid filtration members 5
From screen pipe 3.
Further, the replacement and installation whole in order to facilitate filtration members 5, pass through screw thread between filter house 2 and volume tube 1
Releasable connection, and volume tube 1, filter house 2 and discharge nozzle 4 are on same axle center.The bottom outer surface of volume tube 1 offers more
Road thread groove 8, is also fixedly connected with horizontally disposed connection ring 9 in the bottom outer surface of volume tube 1, also fixed in connection ring 9
It is connected with the sealing ring 10 that a circle is vertically arranged, sealing ring 10, connection ring 9 and volume tube 1 enclose the company for being set as a bottom end opening
Connect cavity 11.The top inner wall of screen pipe 3 is equipped with the connection spiral shell of the cooperation of thread groove 8 of multi-turn and 1 bottom outer surface of volume tube
Line, screen pipe 3 are exactly in connection cavity 11 when being threadedly connected to the bottom end of volume tube 1, meanwhile, connect the top of cavity 11
It is connected with a circle sealing ring (not shown), sealing ring is soft rubber matter, so that between volume tube 1 and screen pipe 3
Form that leakproofness is good is fixedly connected.
In order to reduce be used for a long time after under the percussion of testing liquid filtration members 5 to being recessed at 4 center of discharge nozzle
Situation, compression ring 13, clearance fit between 2 side wall of compression ring 13 and filter house are also equipped in screen pipe 3, and compression ring 13 abuts
In on the degreasing cotton layer 6 of the bottom of filtration members 5 so that the degreasing cotton layer 6 of the bottom can holding as far as possible it is smooth
State.
It is also connected with connecting rope 14 on compression ring 13, multiple intercommunicating pores 15, intercommunicating pore 15 are offered on the side wall of volume tube 1
In connection cavity 11 and position is higher than thread groove 8, and one end of connecting rope 14 is pierced by intercommunicating pore 15 and is located in connection cavity 11,
To when needing replacing filtration members 5, can first helical rotation screen pipe 3 screen pipe 3 and volume tube 1 are detached from, then pass through
Connecting rope 14 proposes compression ring 13 outward, to simultaneously directly take the filtration members 5 being placed on compression ring 13 out of, the side of reaching
Just pacify the effect torn open.
Claims (7)
1. a kind of solid-phase extraction column, it is characterised in that: including filter house (2) and volume tube (1), the volume tube (1) is at least set
There is a feed inlet, the filter house (2) includes screen pipe (3) and discharge nozzle (4), described in screen pipe (3) the upper end connection
Volume tube (1) and lower end is connected to the discharge nozzle (4) is equipped with filtration members (5), the filtration members in the filter house (2)
It (5) include multilayer degreasing cotton layer (6) and active carbon layer (7), the active carbon layer (7) is staggered with the degreasing cotton layer (6)
And the upper and lower ends of the filtration members (5) are degreasing cotton layer (6).
2. a kind of solid-phase extraction column according to claim 1, it is characterised in that: the filter house (2) and the volume tube
(1) by screw thread releasable connection between, the cross-sectional dimension of the volume tube (1) is greater than the cross section of the screen pipe (3)
Product size, and the cross-sectional dimension of the screen pipe (3) is greater than the cross-sectional dimension of the discharge nozzle (4).
3. a kind of solid-phase extraction column according to claim 2, it is characterised in that: the volume tube (1), filter house (2) and
Discharge nozzle (4) is on same axle center.
4. a kind of solid-phase extraction column according to claim 2, it is characterised in that: the bottom outer surface of the volume tube (1)
It offers multiple tracks thread groove (8), is also fixedly connected with horizontally disposed connection ring in the bottom outer surface of the volume tube (1)
(9), the sealing ring (10) that a circle is vertically arranged, the sealing ring (10), connection ring are also fixedly connected on the connection ring (9)
(9) and volume tube (1) encloses the connection cavity (11) for being set as a bottom end opening.
5. a kind of solid-phase extraction column according to claim 4, it is characterised in that: the top connection of connection cavity (11)
Have a circle sealing ring, the sealing ring is soft rubber matter, the top inner side wall of the screen pipe (3) be equipped with multi-turn with it is described
The screw thread of thread groove (8) cooperation.
6. a kind of solid-phase extraction column according to claim 4, it is characterised in that: be additionally provided with compression in the filter house (2)
Ring (13), clearance fit between the compression ring (13) and the filter house (2) side wall, the compression ring (13) are connected to described
On the degreasing cotton layer (6) of the bottom of filtration members (5).
7. a kind of solid-phase extraction column according to claim 6, it is characterised in that: the company of being also connected on the compression ring (13)
Splicing (14) offers multiple intercommunicating pores (15) on the side wall of the volume tube (1), and the intercommunicating pore (15) is located at the connection
In cavity (11) and position is higher than the thread groove (8), and one end of the connecting rope (14) is pierced by the intercommunicating pore (15) and is located at
In the connection cavity (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820829144.1U CN208448702U (en) | 2018-05-30 | 2018-05-30 | A kind of solid-phase extraction column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820829144.1U CN208448702U (en) | 2018-05-30 | 2018-05-30 | A kind of solid-phase extraction column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208448702U true CN208448702U (en) | 2019-02-01 |
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ID=65148636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820829144.1U Active CN208448702U (en) | 2018-05-30 | 2018-05-30 | A kind of solid-phase extraction column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208448702U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112255348A (en) * | 2020-09-29 | 2021-01-22 | 江西志科检测技术有限公司 | Pretreatment method for detecting content of dioxin in soil |
-
2018
- 2018-05-30 CN CN201820829144.1U patent/CN208448702U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112255348A (en) * | 2020-09-29 | 2021-01-22 | 江西志科检测技术有限公司 | Pretreatment method for detecting content of dioxin in soil |
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